Aqara G100 cameras: HSV recording & Home View toggle issues

I installed 4 Aqara G100 cameras this week, and connected them to the Home app. All four are working fine, but two of them will only stream, not record to Homekit Secure Video.

I've attached a pic of the error message I get every time I try to change the setting from stream only, to "stream & allow recording".

I have iCloud+ membership allowing up to five cameras on HSV, so that's not the issue. I've tried updating all the hubs, devices etc and rebooted the WiFi router. I've tried reinstalling the cameras. I'm not even able to set them to record on the initial installation, I get the same error message about changing the settings.

Another annoying bug is that the "Add to Home View" toggle won't stay off on these cameras. Every time I go into the settings for them in the Home app, they are toggled back on and appear in my home view. I have to go back in and toggle them off again.

Anyone got a fix?!